20310009 has 8 divisors (see below), whose sum is σ = 27126240. Its totient is φ = 13516896.

The previous prime is 20310007. The next prime is 20310023. The reversal of 20310009 is 90001302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20310009 - 2¹ = 20310007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20310009.

It is not an unprimeable number, because it can be changed into a prime (20310001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3612 + ... + 7325.

It is an arithmetic number, because the mean of its divisors is an integer number (3390780).

Almost surely, 2^20310009 is an apocalyptic number.

It is an amenable number.

20310009 is a deficient number, since it is larger than the sum of its proper divisors (6816231).

20310009 is a wasteful number, since it uses less digits than its factorization.

20310009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11559.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 20310009 is about 4506.6627342192. The cubic root of 20310009 is about 272.8370668337.

The spelling of 20310009 in words is "twenty million, three hundred ten thousand, nine".